Nut-lock.



,990. PATENTED JUNE so, 1908.

F. M. EN RY 6: J. M. POWERS. NUT LOCK.

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1 y: T' 5 $f-tyfi55fi5 FRANCITJ M. HENRY JOHN M. POWER THEIR flT'TORHErSi as to make the lugs or tongues of "UNITED STATES F TE l1. @FEWEEFRANCIS M. HENRY AND JOHN M. Possess, or niuicniiroti's," usnssorli.

I NUT-LOCK.

Specification of Lettersiatent.

' nes ed ae-3 ,1908;

Application filed March 20,1905. semiNoQ250nsa5. i

To all whom it may concern:

Be it known that we, Funnels" M. HENRY and JOHN M. POWERS, both ofMinneapolis, Hennepin county, Minnesota, have invented certain new anduseful Improvements in Nut-Locks, of which the following is a speci-:iieation.

Our invention relates to nut locks adapted for use wherever it isdesired to secure a nut on a bolt and particularly designed for use inrailroad work. i The object of our invention is to provide a nut lockthat is simple and inexpensive to manufacture and easily operatedwithout the use of special tools.

The invention consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed outin the claims.

In the accompanying drawing, forming part of this specification; Figure1 is a perspective view of a bolt and nut embodying our invention. Fig.2 is a sectional view of one end of the bolt and the nut and lockingdevice thereon. of the nut. Fig. 4 is a sectional view on line 0c-w ofFig. 2. Fig. 5 is a similar view showing the nut locked on the plate.Fig. 6 is a sectional view illustrating a modified form of lockingdevice.

In the drawing, 2 represents a bolt provided with the usual threads 3and nut .4. It is desirable to provide some means for locking the nut onthe bolt to prevent its accidental turning and we, therefore, provide aflat surface 5 at one end of the bolt and a flange 6 on the nut, theflange being formed when the nut is made and projecting from one endthereofover the threads on the bolt. The flange is provided with abeveled edge 6 (as shown clearly in Fig. 2), and when it is ressed downupon the flat surface of the olt the beveled edge will rest squarelythereon and form a broad bearing surface and pro vent any possibility ofthe nut turning in either direction.

A series of slits 7 are provided in the flange,

dividing it into a series of lugs that are 021-- pable of being pressedor struck down upon the fiat surface 5 to prevent accidental turning ofthe nut in-either direction. The slits are preferably so apportioned inthe flange p less width than the flat surface of the bolt. If the llatsurface happens to be directly under one of the lugs composing theflange, then that lug -01 other" tool-mid will re.

Fig. 3 is a perspective view will beforceddownby rheldow of ahammersquarely upon the flat surface 5, as shown in Fig. 1. Should, however,the hit surface be partly under one lug and partly under the contiguousone, then the abutting edges of the two lugs can be struck down togetherupon the bolt so that it is immaterial where the flat surface may bewith respect to the lugs when it is desired to lock the nut, as eitherone or more of the lugs can be pressed down to perfornr The ends of thethe locking operation. threads at theedges of the flat surface will bebelow or on level with said surface and will not be battered. or injuredby the striking down of the lugs, and consequently the nut can be lockedand unlocked a number of times without the bolt threads becoming worn orinjured. This is due princi ally to the use of the compi'iratively broadi at surface with which the lugs engage. V

here the bolt is used in railroad work as at the joints of the rails, itis desirable to use a lock nut that can be operated without the use ofspecial tools. W'e have found our invention articularly suitable forthis pur pose. T 1e lugs can bestruck down with an ordinary trackhammer, or other 'tool, used by the section men or track walkers, andwhenever it is desired toremove a bolt the edge of a chisel, or othertool can, be inserted under the lug for the purpose of raising it toclear the flat surface and. allow the nut to be turned off the bolt ortightened, if preferred.

In Fig. 6 we have shown a modification in the construction of theintention, which consists in omitting the slits 7 and using a continuousflange extending entirely around the opening in the nut. Any portion ofthis flange can be'forced down upon the flat surf: e of. the. bolt, andit will be impossible to turn the nut until the depressed )ortion hasbeen lifted sufficiently toclear tlie-ilat surface. In thismodification, as in the construction first described, the ends of thethreads are at each side of the flat surface (as shown in Fig. 6), andthere is no danger of their being battered or broken by the operation oflocking thenut. y

We claim as our invention:

1. The con'ibination with a threaded bolt formed with a flat surface onone side thereof and having the ends of the threads below or on a levelwith the lane of the flat surface, of a nut rovided with a projectin"flange lying whol j outside of the face of the nut and h ving its outeredge beveled on the inside to bu'ctl' against the flat surface ofthebolt back from the ends of the threads on the bolt, substantially asdescribed.

2. The combination with a threaded bolt formed with a fiat surface onone side thereof and having the ends of thethreads below or on a levelwith the plane of the flat surface, of a nut provided with a slittedflange projectin from and lying Wholly outside of the face 0 the nut andhavin its outer edge beveled on the inside, said .shtted flange forminga number of ton ues each of less width than the flat surface 0% the boltand adapted to be depressed against said surface, substantially 15 asdescribed. I

In witness whereof, We have hereunto set our hands this 14th day ofMarch 1905.

FRANCIS M.HENRY. JOHN M. POWERS.

Witnesses:

RICHARD PAUL, O. MACNAMARA.

